tdom encoding

I am trying to see why tdom is failing on this json snippet.
package req tdom
set x {{"name":"Jeremi"}}
dom parse -json $x
==> error "JSON syntax error" at position 15
"{"name":"Jeremi <--Error-- "}"
If it doesn't get removed by the newsgroup editors, there is a weird character at the very end of x.  It looks almost like "[]" but it is not.  When you edit it, it acts as if it has multiple characters in it.
Another problem is that tdom man page talks about a command "dom setResultEncoding ?encodingName?" but trying it results in an unknown command error.